Improvement in vise



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hud I l I @M N. PETERS, PHDTO-LITHUGRPMER, WASHINGTON D C ,dilated gs/tutes A. Z. MASON, OF ADRIAN, MICHIGAN.

Letters Patent No. 92,331, dated July 6, 1869.

IMPROVEMENT IN VISIE.

The Schedule referred toin these Letters Patent and making part of the same.

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To all whom it may concern Be it known that I, A. Z. MASON, of Adrian, in

4the county of Lenawee, and State of' Michigan, have "invented certain new and 'useful Improvements in Vises, the same being improvements upon bevel-vises, for which Lettersllatent were issued April 2S and September, 1868, to AI Z. Mason and 1t. B. Robbins, assignees to It. B. Robbins; and I dohereby declare the following to be a full, clear', and exact description ofthe same, reference b`eing Vhad to the accompanying drawing, forming part of" this specication.

rIhe object of my invention is to simplify the construction, and add to the strength and utility of the devices for holding wedge-shaped surfaces by attachment to vises, and for which Letters Patent were granted as aforesaid.

rIhe. improvementis especially designed for wooden vises, and wood-working generally, but'it may be applied with equal facility and eflicacy to iron vises and working of' metals.

I subjoin the following description of' its different parts and manner of use, to enable those skilled in the art to manufacture it.

The same letters of reference represent similar parts in/the accompanying drawing.

In the drawingj l Figure 1 represents an upright side elevation, partly in section, showing myinvention arranged for wedged surfaces. Y v l A Figure 2, a rear view, with the movable face-plate and the upper part of' the rear jaw of the vise removed.

Figure 3, a vertical section -on the line x-x, iig. 2,

showing the ymanner ofaixing the-movable face- 'plate to the' vise, when desired to be used for holding ordinary' straight or plane surfaces.

Figures 4 aud-5 are perspective views of the two` parts of the movable face-plate detached.

A A represent the lixed and movable jaws of' a common wooden vise.

B B', E, and, C, lny movable face-plate, fastened in position bythe screw D', andheld stationary at any desired point by the nut D, countersunk into the wood ofthe jaw Af.

' The movable faceplate itself consists of' three pieces, represented byv C, figs. l, 2, and 3; E, figs. 1, 3, and

l4; and B, figs. I, 3, and 5.

The plate G is further provided with founor more slots, G', made to receive the projection Fon the piece B, and thus hold the face-plate B Ffirmly in position, in a manner hereinafter to be morefully s et forth.

The part E consists alsoof; a-pieceofumetal, of' the shape represented in ig.`"4, with 'a circular' hole, G, in the centre, t`o receive the shouldervczon theplate C, fi 2. gOne side of this piece is flat, the other wedge-shaped from the centre to the lower edge, as seen in fig. 4.

- At the point where the wedge-shape begins, is a groove, H, extending across from side to side, calculated'to receive the ridge I I' on the part B.

F' is a slot, which permits 'the projection F on the part'B to pass throughand enter the slots e, in the plate O, for the purpose specified. j

The piece B is also of metal, furnished upon the 'outer surface, which is flat, with a correspondingl flat piece of wood-NB', securely fastened to it by screws or other proper means.

' The lower half of the inner surface of B is also wed-geshaped, to correspond with the shape of E. v

rllhis wood.Y B 'is used to prevent the objects worked beingmarred by contact with the metal plate.

The piece B is furnished with a rim or flange, b, y

upon three sides, and'is large enough to receive the part E within said sides, two of which, b lf, are bevelled,.to correspond with thewedging shape of the -lo-wer .half ofthe piece Il.

The twol pieces being placedtogethenthe wedge I ts snugly into the groove H, the projection F passes through the slot F', the screw D through the hole G.

This screw is fastened into the piece B by a head, coveredbyv-the wood B', and revolves readily in its place, and permitsthe "rotation of the piece B upon its axis. l

Thespring Dzservcs to hold the'projection F within whichever ofthe slots G'lit may be adjusted to.

Having thus explained the construction and use of the` diierent parts, in order to enable others more clearly to understand the object of my invention, I give the following illustration of its utility:

Having placed the lpieces E B together, as is intended, we pass the screw Dl through the opening G, -igs. 1 and 2; place the spring D2 into the countersink, as-shown in fig. 1, and screw on'the nut D.

v We are nowready for operation. Suppose we wish to. work upon pointed ends of a wedge; we turn the face-plate around until the projection F falls into the slot C underneath the hole G; placethe wedgein the vise in the desired position, and screw it in tight by means of the screw A".

The peculiar construction of' the two pieces E and B will cause theinimmediately to conform to the shape of the object in the vise, as represented in iig. 1.

By reversing the face-plate, causing the projection F to rest in either of' the slots C' in the plateQ,- the wedge may be held in any desired position, as firmly as plane surfaces are held in ordinary vises.

If it is desired to hold a plane surface, arrange the face-plate so that the pro ]`ec tion-B` will rest in the slot C above the hole G, place in the objectand screw up the vise. The pressure being upon the top or upper half of B, causes the two pieces E and B to assume the position represented in fig." 3.

By constructing the movable face-plate in the manner and form as described, more compaotness is obtained, and a more durable piece of mechanism produced.

The ridge and groove or bearings H H and I I give a filmer support, and the wedgig lower surfaces accomplish all that is necessary, in order to hold uneven surfaces ofthe kind described.

I do not claim the broad principle of holding wedgesnrfaees by means of alnovable face-plate; but

That I claim as new and of my own invention, and for which I wish to secure Letters Patent, is

Witnesses:

GEO. L. BACHMAN, MILO SMITH.

The combination of `che 'parts E, B, and O, when 

